PLATE XCVI. 



Fig. 



1. General aspect of two of the segments of Stylarioides plumosa, 0. F. Miiller. Enlarged 

 1 a. Bifid branchia of an example sent by Dr. Howden, from Montrose Bay. Enlarged. 



2. Stylarioides glauca, Malmgren. Enlarged under a lens. 



3. Stylarioides arenosa, Webster. Guernsey. Enlarged. 



4. Stylarioides fiabellata, Sars, from the Channel slope. Enlarged. 



5. Head and anterior region of Stylarioides Sarsi, Mcintosh. Enlarged. 



6. Brada villosa, H. Rathke, var., from the Atlantic. Enlarged. 



6 a. Lateral view of three segments, so as to show the bristles and the rough surface. 



Magnified. 

 6 b. Papilla from an example procured in the ' Knight Errant.' Magnified. 



6 c. Segments of a variety of the same showing the papillae. Magnified. 



7. First foot of JEuspio Mesnili, Mcintosh (= Spio filicomis, Malmgren). x 35 diam. 



7 a. Tenth foot. x 35 diam. 



7 b. Twenty-fifth foot. x 35 diam. 

 7 c. Fiftieth foot, x 35 diam. 



7 d. Foot in front of tail. x 35 diam. 



8. Tenth foot of Scolecolepis lamellata, Mel. Taugiers Bay, from the ' Porcupine,' 1870. 



x 35 diam. 



8 a. Fiftieth foot (vide ' Ann. Nat. Hist.,' ser. 8, vol. hi, p. 175). 



9. Cephalic and anterior regions of Pygospio elegans, Claparede, from St. Andrews, with 



seven eye-specks. Enlarged. 



9 a. Tail of the foregoing. Enlarged. 



10. Slender papilla from Flabelligera affinis, Sars. x oc. 4, obj. D. 



11. Papilla from Flabelligera Buskii, Mel. x oc. 2, obj. D. 



12. Ventral aspect of the anterior region of Brada villosa, H. Bathke, showing the 



papillae of the segmental organs. Enlarged. 



13. Ventral view of the anterior end of Nevine foliosa, Sars, with proboscis extruded. 



From Lochmaddy. Enlarged. 



14. Advanced ovum of Spiophanes bombyx, Claparede, from the ccelom. x 180. 



15. Hooks and bristles of second segment of Sclerocheilus minutus, Grube, off Sark, 



August, 1868. x 360. 



